among other gestures pope benedict made blue mosque. the biggest scandal he had to deal with were the widespread sandals of sex abuse against clergy. critics say he didn't do enough. formal apologies and probes in the u.s.s. ireland and elsewhere. he also had to deal with a but butler who stole documents alleging corruption in the vatican. he later pardoned him. benedict saw himself as a quiet intellectual. still he made 25 international trips. well received by crowds and tweeting spiritual messages. rolling platform to roll through st. peters. all of this leading up to momentous decision to step down when he felt he was no longer up for the job. >> pope benedict will not be involved in next month's con conclave of cardinals. he might have a silent vote. he had a big hand of choosing many of those cardinals. bill? >> greg palkot reporting live tonight from london. the pope's replacement could make history as well. experts tell us one of the top contenders is peter cardinal circleson from the country of gahannana. he would be the first b